July 10, 2009: Using a hammer drill and feathers and wedges to split up rocks into rock steps

July 10, 2009: using the generator on the tractor to run the hammer drill and air compressor to split rocks

July 10, 2009: using the generator on the tractor to run the hammer drill and air compressor to split rocks

July 10, 2009: Using a hammer drill and feathers and wedges to split up rocks into rock steps

July 10, 2009: the generator that attaches to the tractor

July 10, 2009: the generator that attaches to the tractor

July 10, 2009: the generator that attaches to the tractor

July 10, 2009: the generator that attaches to the tractor

July 10, 2009: the generator that attaches to the tractor

July 10, 2009: the generator that attaches to the tractor